jt.dk is a .dk domain served by 4 nameservers (ns1.eurodns.com, ns2.eurodns.com, ns3.eurodns.com and 1 more). It was registered on 6 April 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 193.88.185.62 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by smtpsrv01.teledanmark.dk, smtpsrv02.teledanmark.dk. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 193.88.185.62 | 3600s | — | AS3292 | TDC Holding A/S | 193.88.0.0/15 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | smtpsrv01.teledanmark.dk | — | — | — |
| 10 | 3600s | smtpsrv02.teledanmark.dk | — | — | — |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (jt.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.jt.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; fo=1; rua=mailto:cv1zdpyr@ag.eu.dmarcian.com; ruf=mailto:cv1zdpyr@fr.eu.dmarcian.com; |
| www | 193.88.185.62 (AS3292) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 0/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026072111 |
| Primary NS (MNAME) | ns1.eurodns.com |
| Responsible (RNAME) | hostmaster@eurodns.com |
| Refresh | 86400s |
| Retry | 7200s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Eurodns S.A |
| Registered | 1998-04-06 |
| Expires | 2027-06-30 (255d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 13:38:40 | 716ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-12 12:16:25 | 1548ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-08 00:55:33 | 622ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-27 15:35:30 | 681ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-26 21:44:11 | 1813ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-24 20:59:54 | 849ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-23 20:15:29 | 709ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-09 21:43:58 shown | 820ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-31 13:55:54 | 6402ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-26 10:40:52 | 13480ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-19 03:13:39 | 2398ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-18 00:52:28 | 2344ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-03 05:16:11 | 1158ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-22 00:12:00 | 9766ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-16 02:17:07 | 16659ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-11 22:56:53 | 8838ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-25 22:14:53 | 847ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-24 19:17:16 | 2775ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-18 00:04:43 | 2548ms | 4 NS 1 A 2 MX | 🔒 Secure |